Fix Storage Cover missing its cover icon texture in machine UI (#3684)

Author: purebluez

src/main/java/com/gregtechceu/gtceu/api/gui/GuiTextures.java

@@ -191,7 +191,7 @@ public class GuiTextures {
     public static final ResourceTexture MAINTENANCE_ICON = new ResourceTexture(
             "gtceu:textures/block/overlay/machine/overlay_maintenance.png");
     public static final ResourceTexture STORAGE_ICON = new ResourceTexture(
-            "gtceu:textures/item/storage.png");
+            "gtceu:textures/item/storage_cover.png");
     public static final ResourceTexture BUTTON_MINER_MODES = new ResourceTexture(
             "gtceu:textures/gui/widget/button_miner_modes.png");